Imaging lens assembly, camera module and electronic device

ABSTRACT

An imaging lens assembly includes a plastic barrel and an imaging lens set. The plastic barrel includes an object-side aperture and a first annular surface. The imaging lens set includes a plurality of optical elements, wherein at least one of the optical elements is a plastic lens element, and the plastic lens element includes an effective optical portion, a peripheral portion, a second annular surface, and an object-side connecting surface. The peripheral portion is formed around the effective optical portion. The second annular surface is formed on an object-side surface of the plastic lens element and surrounds the effective optical portion. The object-side connecting surface is formed on the object-side surface of the plastic lens element and surrounds the effective optical portion, and the object-side connecting surface is connected with one of the optical elements disposed on an object side of the plastic lens element.

RELATED APPLICATIONS

This application claims priority to Taiwan Application Serial Number106124173, filed Jul. 19, 2017, which is herein incorporated byreference.

BACKGROUND Technical Field

The present disclosure relates to an imaging lens assembly and a IDcamera module. More particularly, the present disclosure relates to animaging lens assembly and a camera module applied to portable electronicdevices.

Description of Related Art

For lens assemblies applied to portable electronic devices, in additionto the lens elements for image formation, the lens assemblies furtherinclude optical elements, such as light blocking sheets, spacers andfixing rings, for maintaining a proper optical distance between lenselements or for positioning all of the lens elements within a plasticbarrel thereto. However, because of the size relation between the lenselements and the optical elements, it is easy to damage the lenselements and optical elements indirectly by the compression forceapplied externally during the assembling process of the lens assemblies,so that the lens elements and optical elements cannot recover to theconditions before being forced.

For example, FIG. 8A is a schematic view of a conventional imaging lensassembly 80, FIG. 8B is a schematic view of a light blocking sheet 81 ofthe imaging lens assembly 80 of FIG. 8A, and FIG. 8C is a schematic viewof a spacer 82 of the imaging lens assembly 80 of FIG. 8A. As shown inFIG. 8A, after the optical elements are sequentially arranged in abarrel 89 of the imaging lens assembly 80, a fixing ring 83 is disposedon an image side of the imaging lens assembly 80, and then a compressionforce is applied to the fixing ring 83 at a position indicated by anarrow A. Since an opening of the fixing ring 83 is larger than the outerdiameters of other optical elements, the forcing points of other opticalelements are closer to an outer diameter surface in a peripheral regionthereof, which is indicated by an arrow B. As shown in FIG. 8B, astressing line 811 is generated after the light blocking sheet 81 beingforced, and it is indicated that the light blocking sheet 81 is damagedand cannot recover to the condition before being forced. As shown inFIG. 8C, a flexure 821 is generated after the spacer 82 being forced,and it damages not only the flexure 821 itself but also affects otheradjacent optical elements to have problems of flexural deformation so asto affect a shape of an optical effective portion thereof, so that theimaging quality of the of the imaging lens assembly 80 will bedecreased. Because the spacer 82 is generally made of a PC materialwhich has a hardness being soft (compared to the pencil hardness), it isunrecoverable after flexure formation of the spacer 82. Furthermore, ifthe material of the spacer 82 is replaced with a harder material, themanufacturing cost is too high, and the spacer 82 is difficult to formduring the injection molding process.

Therefore, in conventional imaging lens assemblies, the size problem ofthe optical elements will directly decrease the manufacturing efficiencyand affect the imaging quality, so that it has become an important issueneeds to be resolved eagerly in the relative field.

SUMMARY

The present disclosure provides an imaging lens assembly including aplastic barrel and an imaging lens set. The plastic barrel includes anobject-side aperture and a first annular surface. The first annularsurface is formed in the plastic barrel and surrounds the object-sideaperture. The imaging lens set is disposed in the plastic barrel and hasan optical axis, and the imaging lens set includes a plurality ofoptical elements, wherein at least one of the optical elements is aplastic lens element, and the plastic lens element includes an effectiveoptical portion, a peripheral portion, a second is annular surface andan object-side connecting surface. The peripheral portion is formedaround the effective optical portion. The second annular surface isformed on an object-side surface of the plastic lens element andsurrounds the effective optical portion. The object-side connectingsurface is formed on the object-side surface of the plastic lens elementand surrounds the effective optical portion, and the object-sideconnecting surface is connected with one of the optical elementsdisposed on an object side of the plastic lens element, wherein theobject-side connecting surface is closer to the effective opticalportion than the second annular surface thereto. Wherein, the firstannular surface and the second annular surface are parallel to eachother, both of the first annular surface and the second annular surfaceare perpendicular to the optical axis, and there is without additionalone or more optical elements inserted between the first annular surfaceand the second annular surface. Wherein, the object-side connectingsurface is disposed on an object side of the first annular surface, adistance parallel to the optical axis between the object-side connectingsurface and the first annular surface is AT1, and the followingcondition is satisfied:−0.40 mm<AT1<0 mm.

According to another aspect of the present disclosure, a camera moduleincludes the imaging lens assembly according to the aforementionedaspect.

According to another aspect of the present disclosure, an electronicdevice includes the camera module according to the aforementioned aspectand an image sensor disposed on an image surface of the camera module.

BRIEF DESCRIPTION OF THE DRAWINGS

The present disclosure can be more fully understood by reading thefollowing detailed description of the embodiment, with reference made tothe accompanying drawings as follows:

FIG. 1A is a schematic view of a camera module according to the 1stembodiment of the present disclosure;

FIG. 1B is a schematic view of an imaging lens set of an imaging lensassembly of the camera module according to the 1st embodiment;

FIG. 1C is an exploded view of a plastic barrel and a fourth plasticlens element according to the 1st embodiment;

FIG. 1D is a schematic view of parameters of the 1st embodiment;

FIG. 1E is a schematic view of outer diameters of each of the plasticlens elements of the imaging lens set according to the 1st embodiment;

FIG. 2A is a schematic view of a camera module according to the 2ndembodiment of the present disclosure;

FIG. 2B is a schematic view of an imaging lens set of an imaging lensassembly of the camera module according to the 2nd embodiment;

FIG. 2C is an exploded view of a plastic barrel and a fourth plasticlens element according to the 2nd embodiment;

FIG. 2D is a schematic view of parameters of the 2nd embodiment;

FIG. 2E is a schematic view of outer diameters of each of the plasticlens elements of the imaging lens set according to the 2nd embodiment;

FIG. 3A is a schematic view of a camera module according to the 3rdembodiment of the present disclosure;

FIG. 3B is a schematic view of an imaging lens set of an imaging lensassembly of the camera module according to the 3rd embodiment;

FIG. 3C is an exploded view of a plastic barrel and a fourth plasticlens element according to the 3rd embodiment;

FIG. 3D is a schematic view of parameters of the 3rd embodiment;

FIG. 3E is a schematic view of outer diameters of each plastic lenselement of the imaging lens set according to the 3rd embodiment;

FIG. 4A is a schematic view of a camera module according to the 4thembodiment of the present disclosure;

FIG. 4B is a schematic view of an imaging lens set of an imaging lensassembly of the camera module according to the 4th embodiment;

FIG. 4C is an exploded view of a plastic barrel and a fourth plasticlens element according to the 4th embodiment;

FIG. 4D is a schematic view of parameters of the 4th embodiment;

FIG. 4E is a schematic view of outer diameters of each plastic lenselement of the imaging lens set according to the 4th embodiment;

FIG. 5A is a schematic view of an electronic device according to the 5thembodiment of the present disclosure;

FIG. 5B is another schematic view of the electronic device according tothe 5th embodiment;

FIG. 5C is a block diagram of the electronic device according to the 5thembodiment;

FIG. 6 is a schematic view of an electronic device according to the 6thembodiment of the present disclosure;

FIG. 7 is a schematic view of an electronic device according to the 7thembodiment of the present disclosure;

FIG. 8A is a schematic view of a conventional imaging lens assembly;

FIG. 8B is a schematic view of a light blocking sheet of the imaginglens assembly of FIG. 8A; and

FIG. 8C is a schematic view of a spacer of the imaging lens assembly ofFIG. 8A.

DETAILED DESCRIPTION

An imaging lens assembly includes a plastic barrel and an imaging lensset, wherein the imaging lens set is disposed in the plastic barrel andhas an optical axis, and the imaging lens set includes a plurality ofoptical elements.

In detail, the plastic barrel includes an object-side aperture and afirst annular surface, wherein the first annular surface is formed inthe plastic barrel and surrounds the object-side aperture. Inparticular, “the first annular surface surrounds the object-sideaperture” means that the first annular surface surrounds the object-sideaperture while looking from an image side of the plastic barrel towardthe object-side aperture on an object side thereof, that is, the firstannular surface is disposed on an inner surface of the plastic barrel.

At least one of the optical elements of the imaging lens set is aplastic lens element. The plastic lens element has an object-sidesurface and an to image-side surface, and includes an effective opticalportion, a peripheral portion, a second annular surface and anobject-side connecting surface. The peripheral portion is formed aroundthe effective optical portion. The second annular surface is formed onthe object-side surface of the plastic lens element and surrounds theeffective optical portion. The object-side connecting surface is formedon the object-side surface of the plastic lens element and surrounds theeffective optical portion, and the object-side connecting surface isconnected with one of the optical elements disposed on the object sideof the plastic lens element. The second annular surface and theobject-side connecting surface are both disposed on the peripheralportion, and the object-side connecting surface is closer to theeffective optical portion than the second annular surface thereto. Thefirst annular surface and the second annular surface are parallel toeach other, both of the first annular surface and the second annularsurface are perpendicular to the optical axis, and there is withoutadditional one or more optical elements inserted between the firstannular surface and the second annular surface. The object-sideconnecting surface is disposed on an object side of the first annularsurface, when a distance parallel to the optical axis between theobject-side connecting surface and the first annular surface is AT1 (thefirst annular surface is defined as a reference surface, and a distanceparallel to the optical axis between the object-side connecting surfacedisposed on an object side of the reference surface and the referencesurface is a negative value), the following condition is satisfied:−0.40 mm<AT1<0 mm. Therefore, the appearance of the plastic lens elementcan be more stereoscopic, which is different from conventional lenselements with flatter appearance, and the supporting intensity of theplastic lens element itself can be reinforced. Moreover, the compressionforce applied during the assembling process of the imaging lens assemblycan be moderated by the arrangement of the first annular surface and thesecond annular surface so as to reduce the flexural level of the plasticlens element effectively.

An air space can be disposed between the first annular surface and thesecond annular surface. Therefore, the increasing of the assemblingtolerance of the imaging lens assembly resulted from the first annularsurface leaning on the plastic lens element can be avoided.

When a length of the air space between the first annular surface and thesecond annular surface is d, the following condition can be satisfied:0.001 mm<d<0.08 mm. Therefore, a smaller space between the plastic lenselement and the plastic barrel can be obtained, so that the firstannular surface can provide a supporting force to the plastic lenselement immediately before the plastic lens element is over-bending soas to protect the plastic lens element.

The plastic lens element can further include an image-side connectingsurface, and the image-side connecting surface is formed on animage-side surface of the plastic lens element and surrounds theeffective optical portion, that is, the image-side connecting surface isdisposed on the peripheral portion. The image-side connecting surface isconnected with another of the optical elements disposed on the imageside of the plastic lens element. When the distance parallel to theoptical axis between the object-side connecting surface and the firstannular surface is AT1, and a distance parallel to the optical axisbetween the image-side connecting surface and the first annular surfaceis AT2 (the first annular surface is defined as the reference surface,and a distance parallel to the optical axis between the image-sideconnecting surface disposed on an image side of the reference surfaceand the reference surface is a positive value), the following conditioncan be satisfied: −0.60<AT1/AT2<0.0. Therefore, the appearance of theplastic lens element can be maintained, and a large height differencebetween the object-side connecting surface and the image-side connectingsurface can be prevented so as to reduce the manufacturing difficulty.

Furthermore, when the distance parallel to the optical axis between theobject-side connecting surface and the first annular surface is AT1, andthe distance parallel to the optical axis between the image-sideconnecting surface and the first annular surface is AT2, the followingcondition can be satisfied: 2×|AT1|<AT2. Therefore, the structuralintensity of the plastic lens element can be increased.

The object-side connecting surface and the image-side connecting surfacecan be parallel to each other, and both of the object-side connectingsurface and the image-side connecting surface can be perpendicular tothe optical axis. Therefore, a proper assembling position for otheroptical elements can be provided.

A mucilage material can be applied between the first annular surface andthe second annular surface. Therefore, a material which can absorb thecompression force can be provided so as to prevent the first annularsurface from deformation by force.

At least one of the first annular surface and the second annular surfacecan be an annular stepped surface arranged along a directionperpendicular to the optical axis. Therefore, the moderating efficiencycan be further enhanced by the disposition of the annular steppedsurface. Furthermore, in addition to the disposition of the annularstepped surface, a mucilage material can be further applied between thefirst annular surface and the second annular surface. Because an appliedrange of the mucilage material can be effectively restricted by theannular stepped surface so as to avoid overflowing of the mucilagematerial, it is favorable for avoiding contaminating of the object-sideconnecting surface of the plastic lens element by the mucilage material,and therefore the assembling accuracy of the imaging lens assembly canbe maintained.

When a central thickness of the plastic lens element is CT, and thedistance parallel to the optical axis between the image-side connectingsurface and the first annular surface is AT2, the following conditioncan be satisfied: 0.4<AT2/CT<2.0. Therefore, the thickness of theplastic lens element can be well-distributed, and it is favorable foravoiding the thickness of partial region of the plastic lens elementbeing too thin and then affecting the fluency of the injection molding.More preferably, the following condition can be satisfied:0.5<AT2/CT<1.6. Therefore, the flexural level of the plastic lenselement can be further well-distributed so as to prevent the thinnestregion of the plastic lens element from over bending.

When a length of the first annular surface perpendicular to the opticalaxis is S1, and a length of the second annular surface perpendicular tothe optical axis is S2, the following condition can be satisfied:70%<(S1/S2)×100%<200%. Therefore, a corresponding region of the firstannular surface and the second annular surface is larger, and it isfavorable for preventing the partial thickness of the plastic barrelfrom being too thick and increasing the size of the plastic barrel.

Each of the aforementioned features of the imaging lens assembly of thepresent disclosure can be utilized in numerous combinations, so as toachieve the corresponding functionality.

According to another aspect of the present disclosure, a camera moduleincludes the imaging lens assembly according to the aforementionedaspect.

In the camera module, the object-side aperture of the imaging lensassembly can be an aperture stop of the imaging lens set. Therefore,enough entry light of the camera module can be assured by thedisposition of a front aperture stop, so that the demands for largeaperture stop can be satisfied.

In the imaging lens set of the camera module, when a number of theplastic lens elements is N, a number of the plastic lens element havingan outer diameter ψN1i is N1, and a number of the plastic lens elementhaving an outer diameter ψN2j is N2, the following conditions aresatisfied: 5≤N<10; N=N1+N2; 2.8 mm<ψN1i<3.8 mm, wherein i=1, 2, 3 . . .N−1; and 4.7 mm<ψN2j<7.0 mm, wherein j=1, 2 . . . N−N1. Therefore, theouter diameter of a lens elements group having the number N1 of theimaging lens set and the outer diameter of a lens elements group havingthe number N2 of the imaging lens set can be significantly demarcatedfrom each other, and each of the lens elements groups has a specificrange, so that enlarging of the outer diameter of the lens elementsgroup having the number N1 in order to accommodate to a lens elementsgroup having larger outer diameters can be avoided. It is favorable fordesigning a proper first annular surface and a second annular surface ofthe plastic barrel and the plastic lens element so as to reduce thespace waste and the size of the camera module.

According to another aspect of the present disclosure, an electronicdevice includes the camera module according to the aforementioned aspectand an image sensor, wherein the image sensor is disposed on an imagesurface of the camera module. Therefore, it is favorable for enhancingthe manufacturing efficiency of the electronic device, and the demandfor compact size of the electronic device can be achieved.

According to the above descriptions, the specific embodiments andreference drawings thereof are given below so as to describe the presentdisclosure in detail.

1st Embodiment

FIG. 1A is a schematic view of a camera module according to the 1stembodiment of the present disclosure. FIG. 1B is a schematic view of animaging lens set 120 of an imaging lens assembly 100 of the cameramodule according to the 1st embodiment. As shown in FIG. 1A, the cameramodule includes, in order from an object side to an image side along anoptical axis X, an imaging lens assembly 100, an IR-cut filter 140 andan image surface 150, wherein the image surface 150 is disposed on animage side of the imaging lens assembly 100, and the image sensor 160 isdisposed on the image surface 150. The imaging lens assembly 100includes a plastic barrel 110 and an imaging lens set 120, wherein theimaging lens set 120 is disposed in the plastic barrel 110.

In detail, the imaging lens set 120 has the optical axis X and includesa plurality of optical elements, and the optical elements are, in orderfrom the object side to the image side, a first plastic lens element121, a second plastic lens element 122, a stop 126, a third plastic lenselement 123, a light blocking sheet 127, a fourth plastic lens element130, a spacer 128, a light blocking sheet 129 and a fifth plastic lenselement 125.

The plastic barrel 110 includes an object-side aperture 111 and a firstannular surface 112, wherein the object-side aperture 111 is an aperturestop of the imaging lens set 120, and the first annular surface 112 isformed in the plastic barrel 110 and surrounds the object-side aperture111.

FIG. 1C is an exploded view of the plastic barrel 110 and the fourthplastic lens element 130 according to the 1st embodiment. FIG. 1D is aschematic view of parameters of the 1st embodiment. The fourth plasticlens element 130 includes an effective optical portion 131, a peripheralportion 132, a second annular surface 133, an object-side connectingsurface 134 and an image-side connecting surface 135. The peripheralportion 132 is formed around the effective optical portion 131. Thesecond annular surface 133 is formed on an object-side surface of thefourth plastic lens element 130 and surrounds the effective opticalportion 131, that is, the second annular surface 133 is disposed on theperipheral portion 132. The object-side connecting surface 134 is formedon an object-side surface of the fourth plastic lens element 130 andsurrounds the effective optical portion 131, and the object-sideconnecting surface 134 is connected with one of the optical elementsdisposed on an object side of the fourth plastic lens element 130 (thatis, the light blocking sheet 127 of the 1st embodiment), wherein theobject-side connecting surface 134 is closer to the effective opticalportion 131 than the second annular surface 133 thereto. The image-sideconnecting surface 135 is formed on an image-side surface of the fourthplastic lens element 130 and surrounds the effective optical portion131, and the image-side connecting surface 135 is to connected withanother of the optical elements disposed on an image side of the fourthplastic lens element 130 (that is, the spacer 128 of the 1stembodiment). The first annular surface 112 and the second annularsurface 133 are parallel to each other, both of the first annularsurface 112 and the second annular surface 133 are perpendicular to theoptical axis X, and there is without additional one or more opticalelements inserted between the first annular surface 112 and the secondannular surface 133. The object-side connecting surface 134 and theimage-side connecting surface 135 are parallel to each other, and bothof the object-side connecting surface 134 and the image-side connectingsurface 135 are perpendicular to the optical axis X.

As shown in FIG. 1D, the object-side connecting surface 134 is disposedon an object side of the first annular surface 112. When a distanceparallel to the optical axis X between the object-side connectingsurface 134 and the first annular surface 112 is AT1, the following thecondition is satisfied: AT1=−0.117 mm. Therefore, the compression forceapplied during the assembling process of the imaging lens assembly canbe supported by the appearance of the fourth plastic lens element 130,and no additional spacer is needed.

An air space is disposed between the first annular surface 112 and thesecond annular surface 133. When a length of the air space between thefirst annular surface 112 and the second annular surface 133 is d, thefollowing condition is satisfied: d=0.028 mm. Therefore, the compressivebending of the fourth plastic lens element 130 during the assemblingprocess can be supported by the first annular surface 112.

When the distance parallel to the optical axis X between the object-sideconnecting surface 134 and the first annular surface 112 is AT1, and adistance parallel to the optical axis X between the image-sideconnecting surface 135 and the first annular surface 112 is AT2, thefollowing condition is satisfied: AT1/AT2=−0.247. Furthermore, in the1st embodiment, when AT1=−0.117 mm, and AT2=0.473 mm, the followingcondition can be satisfied: 2×|AT1|<AT2.

At least one of the first annular surface 112 and the second annularsurface 133 is an annular stepped surface arranged along a directionperpendicular to the optical axis X. In particular, as shown in FIG. 1C,the first annular surface 112 is an annular stepped surface arrangedalong the direction perpendicular to the optical axis X in the 1stembodiment.

As shown in FIG. 1D, when a central thickness of the fourth plastic lenselement 130 is CT, and the distance parallel to the optical axis Xbetween the image-side connecting surface 135 and the first annularsurface 112 is AT2, the following condition is satisfied: AT2/CT=0.858.

A length of the first annular surface 112 perpendicular to the opticalaxis X is S1 (the aforementioned length is defined as a lengthperpendicular to the optical axis X of the first annular surface 112 ona cross-section surface of the imaging lens assembly 100, and thecross-section surface is shown by a cross-section line passing throughthe optical axis X), and a length of the second annular surface 133perpendicular to the optical axis X is S2 (the aforementioned length isdefined as a length perpendicular to optical axis X of the secondannular surface 133 on a cross-section surface of the fourth plasticlens element 130, and the cross-section surface is shown by across-section line passing through the optical axis X). Furthermore, inthe 1st embodiment, when S1=0.565 mm, and S2=0.55 mm, the followingcondition is satisfied: (S1/S2)×100%=102.7%.

When a number of the plastic lens elements is N, a number of the plasticlens elements having an outer diameter ψN1i is N1, and a number ofplastic lens elements having an outer diameter ψN2j is N2, the followingconditions are satisfied: 5≤N<10; N=N1+N2; 2.8 mm<ψN1i<3.8 mm, whereini=1, 2, 3 . . . N−1; and 4.7 mm<ψN2j<7.0 mm, wherein j=1, 2 . . . N−N1.Please refer to FIG. 1E, which is a schematic view of outer diameters ofeach of the plastic lens elements of the imaging lens set 120 accordingto the 1st embodiment. As shown in FIG. 1E, in the 1st embodiment, N=5,N1=3 (those are, the first plastic lens element 121, the second plasticlens element 122 and the third plastic lens element 123), N2=2 (thoseare, the fourth plastic lens element 130 and the fifth plastic lenselement 125), and the values of the outer diameters of each of theplastic lens elements are shown below.

1st Embodiment Plastic Lens Element 121 122 123 130 125 ψN11 ψN12 ψN13ψN21 ψN22 Outer Diameter 3.4 3.5 3.65 5.3 5.89 (mm)

The detailed optical data of the 1st embodiment are shown in Table 1 andthe aspheric surface data are shown in Table 2 below.

TABLE 1 1st embodiment f = 3.90 mm, Fno = 2.05, HFOV = 39.3 deg. FocalSurface # Curvature radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Ape. stop Plano −0.351 2 Lens 1 1.434 ASP 0.627Plastic 1.545 56.1 3.18 3 7.017 ASP 0.075 4 Lens 2 11.905 ASP 0.230Plastic 1.660 20.4 −6.79 5 3.230 ASP 0.176 6 Stop Plano 0.173 7 Lens 325.368 ASP 0.334 Plastic 1.566 37.4 39.79 8 −200.000 ASP 0.504 9 Lens 4−6.630 ASP 0.551 Plastic 1.544 56.0 3.08 10 −1.377 ASP 0.533 11 Lens 5−2.599 ASP 0.340 Plastic 1.544 56.0 −2.26 12 2.444 ASP 0.500 13 IR-cutfilter Plano 0.210 Glass 1.517 64.2 — 14 Plano 0.227 15 Image Plano —Surface Reference wavelength is 587.6 nm (d-line). Effective radius ofSurface 6 is 0.845 mm.

TABLE 2 Aspheric Coefficients Surface # 2 3 4 5 7 k= −8.7708E−02−4.2074E+01 7.9293E+00 −7.0051E+00 4.8844E+01 A4= 4.2185E−03 −1.6384E−01−2.6008E−01 −9.3578E−02 −2.2593E−01 A6= −1.0722E−02 2.8299E−016.6482E−01 4.6345E−01 −7.7557E−02 A8= 1.0134E−01 −2.0133E−01 −6.7146E−01−4.0513E−01 3.1320E−01 A10= −2.8109E−01 −4.0737E−03 3.0151E−011.1650E−01 −6.2329E−01 A12= 3.3367E−01 7.7646E−03 −4.2762E−02 1.0293E−013.7296E−01 A14= −1.5900E−01 Surface # 8 9 10 11 12 k= −9.9000E+01−1.8680E+01 −6.8670E+00 −5.0992E+00 −1.7750E+01 A4= −1.9162E−01−5.7622E−02 −1.9899E−01 −1.0250E−01 −7.4010E−02 A6= 4.9255E−02−1.3742E−02 2.6722E−01 6.5106E−02 3.3794E−02 A8= −2.6034E−01 5.1328E−03−2.6995E−01 −2.1488E−02 −1.1982E−02 A10= 4.9982E−01 −3.1514E−021.8174E−01 4.9743E−03 2.6579E−03 A12= −5.0712E−01 2.7153E−02 −6.9834E−02−7.6675E−04 −3.7350E−04 A14= 2.1081E−01 −5.7762E−03 1.3950E−026.7745E−05 3.0931E−05 A16= −1.1346E−03 −2.5483E−06 −1.1185E−06

Table 1 is detailed optical data of the imaging lens set 120, the IR-cutfilter 140 and the image surface 150 of FIG. 1 according to the 1stembodiment, wherein the curvature radius, the thickness and the focallength are shown in millimeters (mm), and surface number 0-15represented the surfaces sequentially arranged from the object side tothe image side. Moreover, f represent a focal length of the imaging lensassembly, Fno represents an f-number of the imaging lens assembly, andHFOV represents half of a maximum field of view of the imaging lensassembly according to the 1st embodiment. Table 2 is the asphericsurface data of the 1st embodiment, wherein k represents the coniccoefficient of the equation of the aspheric surface profiles, and A4-A16represent the aspheric coefficients of each of the surfaces from the 4thorder to the 16th order. The equation of the aspheric surface profilesof the aforementioned lens elements of the 1st embodiment is expressedas follows:

${{X(Y)} = {{( {Y^{2}/R} )/( {1 + {{sqrt}( {1 - {( {1 + k} ) \times ( {Y/R} )^{2}}} )}} )} + {\sum\limits_{i}\;{({Ai}) \times ( Y^{i} )}}}};$wherein,

X is the relative distance between a point on the aspheric surfacespaced at a distance Y from the optical axis and the tangential plane atthe aspheric surface vertex on the optical axis;

Y is the vertical distance from the point on the aspheric surface to theoptical axis;

R is the curvature radius;

k is the conic coefficient; and

Ai is the i-th aspheric coefficient.

2nd Embodiment

FIG. 2A is a schematic view of a camera module according to the 2ndembodiment of the present disclosure. FIG. 2B is a schematic view of animaging lens set 220 of an imaging lens assembly 200 of the cameramodule according to the 2nd embodiment. As shown in FIG. 2A, the cameramodule includes, in order from an object side to an image side along anoptical axis X, an imaging lens assembly 200, an IR-cut filter 240 andan image surface 250, wherein the image surface 250 is disposed on animage side of the imaging lens assembly 200, and the image sensor 260 isdisposed on the image surface 250. The imaging lens assembly 200includes a plastic barrel 210 and an imaging lens set 220, wherein theimaging lens set 220 is disposed in the plastic barrel 210.

As shown in FIG. 2B, the imaging lens set 220 has the optical axis X andincludes a plurality of optical elements, and the optical elements are,in order from the object side to the image side, a first plastic lenselement 221, a second plastic lens element 222, a stop 226, a thirdplastic lens element 223, a light blocking sheet 227, a fourth plasticlens element 230, a spacer 228, a light blocking sheet 229 and a fifthplastic lens element 225.

The plastic barrel 210 includes an object-side aperture 211 and a firstannular surface 212, wherein the object-side aperture 211 is an aperturestop of the imaging lens set 220, and the first annular surface 112 isformed in the plastic barrel 210 and surrounds the object-side aperture211.

FIG. 2C is an exploded view of the plastic barrel 210 and the fourthplastic lens element 230 according to the 2nd embodiment. FIG. 2D is aschematic view of parameters of the 2nd embodiment. The fourth plasticlens element 230 includes an effective optical portion 231, a peripheralportion 232, a second annular surface 233, an object-side connectingsurface 234 and an image-side connecting surface 235. The peripheralportion 232 is formed around the effective optical portion 231. Thesecond annular surface 233 is formed on an object-side surface of thefourth plastic lens element 230 and surrounds the effective opticalportion 231, that is, the second annular surface 233 is disposed on theperipheral portion 232. The object-side connecting surface 234 is formedon an object-side surface of the fourth plastic lens element 230 andsurrounds the effective optical portion 231, and the object-sideconnecting surface 234 is connected with one of the optical elementsdisposed on an object side of the fourth plastic lens element 230 (thatis, the light blocking sheet 227 of the 2nd embodiment), wherein theobject-side connecting surface 234 is closer to the effective opticalportion 231 than the second annular surface 233 thereto. The image-sideconnecting surface 235 is formed on an image-side surface of the fourthplastic lens element 230 and surrounds the effective optical portion231, and the image-side connecting surface 235 is connected with anotherof the optical elements disposed on an image side of the fourth plasticlens element 230 (that is, spacer 228 of the 2nd embodiment). The firstannular surface 212 and the second annular surface 233 are parallel toeach other, both of the first annular surface 212 and the second annularsurface 233 are perpendicular to the optical axis X, and there iswithout additional one or more optical elements inserted between thefirst annular surface 212 and the second annular surface 233. Theobject-side connecting surface 234 and the image-side connecting surface235 are parallel to each other, and both of the object-side connectingsurface 234 and the image-side connecting surface 235 are perpendicularto the optical axis X.

At least one of the first annular surface 212 and the second annularsurface 233 is an annular stepped surface arranged along a directionperpendicular to the optical axis X. In particular, as shown in FIG. 2C,the second annular surface 233 is an annular stepped surface arrangedalong the direction perpendicular to the optical axis X in the 2ndembodiment.

Please refer to FIG. 2C and FIG. 2D, the parameters shown below and thedefinitions thereof are the same as the 1st embodiment, and anexplanation in this regard will not be provided again.

2nd embodiment AT1 (mm) −0.162 CT (mm) 0.558 AT2 (mm) 0.428 S1 (mm)0.396 AT1/AT2 −0.379 S2 (mm) 0.443 d (mm) 0.028 (S1/S2) × 100% 89.4%

When a number of the plastic lens elements is N, a number of the plasticlens elements having an outer diameter ψN1i is N1, and a number of theplastic lens element having an outer diameter ψN2j is N2, the followingconditions are satisfied: 5≤N<10; N=N1+N2; 2.8 mm<ψN1i<3.8 mm, whereini=1, 2, 3 . . . N−1; and 4.7 mm<ψN2j<7.0 mm, wherein j=1, 2 . . . N−N1.Please refer to FIG. 2E, which is a schematic view of outer diameters ofeach of the plastic lens elements of the imaging lens set 220 accordingto the 2nd embodiment. As shown in FIG. 2E, in the 2nd embodiment, N=5,N1=3 (those are, the first plastic lens element 221, the second plasticlens element 222 and the third plastic lens element 223), N2=2 (thoseare, the fourth plastic lens element 230 and the fifth plastic lenselement 225), and values of the outer diameters of each of the plasticlens elements are shown below.

2nd embodiment Plastic Lens Element 221 122 223 230 225 ψN11 ψN12 ψN13ψN21 ψN22 Outer Diameter 3.4 3.5 3.65 5.3 5.95 (mm)

The detailed optical data of the 2nd embodiment are shown in Table 3 andthe aspheric surface data are shown in Table 4 below.

TABLE 3 2nd embodiment f = 3.87 mm, Fno = 2.05, HFOV = 39.5 deg. FocalSurface # Curvature radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Ape. stop Plano −0.339 2 Lens 1 1.434 ASP 0.627Plastic 1.545 56.0 3.18 3 7.017 ASP 0.075 4 Lens 2 11.905 ASP 0.230Plastic 1.660 20.4 −6.79 5 3.230 ASP 0.176 6 Stop Plano 0.173 7 Lens 325.368 ASP 0.334 Plastic 1.566 37.4 39.79 8 −200.000 ASP 0.501 9 Lens 4−7.132 ASP 0.558 Plastic 1.544 56.0 2.93 10 −1.340 ASP 0.479 11 Lens 5−3.147 ASP 0.344 Plastic 1.534 55.9 −2.20 12 1.949 ASP 0.400 13 IR-cutfilter Plano 0.300 Glass 1.517 64.2 — 14 Plano 0.301 15 Image Plano —surface Reference wavelength is 587.6 nm (d-line). Effective radius ofSurface 6 is 0.845 mm.

TABLE 4 Aspheric Coefficients Surface # 2 3 4 5 7 k= −8.7708E−02−4.2074E+01 7.9293E+00 −7.0051E+00 4.8844E+01 A4= 4.2185E−03 −1.6384E−01−2.6008E−01 −9.3578E−02 −2.2593E−01 A6= −1.0722E−02 2.8299E−016.6482E−01 4.6345E−01 −7.7557E−02 A8= 1.0134E−01 −2.0133E−01 −6.7146E−01−4.0513E−01 3.1320E−01 A10= −2.8109E−01 −4.0737E−03 3.0151E−011.1650E−01 −6.2329E−01 A12= 3.3367E−01 7.7646E−03 −4.2762E−02 1.0293E−013.7296E−01 A14= −1.5900E−01 Surface # 8 9 10 11 12 k= −9.9000E+015.0073E+00 −7.5305E+00 −1.0912E+00 −1.4157E+01 A4= −1.9162E−01−4.5721E−02 −2.3159E−01 −1.2042E−01 −8.0120E−02 A6= 4.9255E−02−3.8277E−02 3.1239E−01 8.9331E−02 3.6782E−02 A8= −2.6034E−01 2.9436E−02−3.2820E−01 −2.9881E−02 −1.2075E−02 A10= 4.9982E−01 −4.8924E−022.2435E−01 6.3476E−03 2.3735E−03 A12= −5.0712E−01 3.4284E−02 −8.6701E−02−8.6531E−04 −2.7878E−04 A14= 2.1081E−01 −6.8793E−03 1.7380E−026.8309E−05 1.8892E−05 A16= −1.4194E−03 −2.3534E−06 −5.7559E−07

In the 2nd embodiment, the equation of the aspheric surface profiles isthe same as the equation of the 1st embodiment, so an explanation inthis regard will not be provided again.

3rd Embodiment

FIG. 3A is a schematic view of a camera module according to the 3rdembodiment of the present disclosure. FIG. 3B is a schematic view of animaging lens set 320 of an imaging lens assembly 300 of the cameramodule according to the 3rd embodiment. As shown in FIG. 3A, the cameramodule includes, in order from an object side to an image side along anoptical axis X, an imaging lens assembly 300, an IR-cut filter 340 andan image surface 350, wherein the image surface 350 is disposed on animage side of the imaging lens assembly 300, and the image sensor 360 isdisposed on the image surface 350. The imaging lens assembly 300includes a plastic barrel 310 and an imaging lens set 320, wherein theimaging lens set 320 is disposed in the plastic barrel 310.

As shown in FIG. 3B, the imaging lens set 320 has the optical axis X andincludes a plurality of optical elements, and the optical elements are,in order from the object side to the image side, a first plastic lenselement 321, a light blocking sheet 326, a second plastic lens element322, a stop 327, a third plastic lens element 323, a light blockingsheet 328, a fourth plastic lens element 330, a spacer 329 and a fifthplastic lens element 325.

The plastic barrel 310 includes an object-side aperture 311 and a firstannular surface 312, wherein the object-side aperture 311 is an aperturestop of the imaging lens set 320, and the first annular surface 312 isformed in the plastic barrel 310 and surrounds the object-side aperture311.

FIG. 3C is an exploded view of the plastic barrel 310 and the fourthplastic lens element 330 according to the 3rd embodiment. FIG. 3D is aschematic view of parameters of the 3rd embodiment. The fourth plasticlens element 330 includes an effective optical portion 331, a peripheralportion 332, a second annular surface 333, an object-side connectingsurface 334 and an image-side connecting surface 335. The peripheralportion 332 is formed around the effective optical portion 331. Thesecond annular surface 333 is formed on an object-side surface of thefourth plastic lens element 330 and surrounds the effective opticalportion 331, that is, the second annular surface 333 is disposed on theperipheral portion 332. The object-side connecting surface 334 is formedon an object-side surface of the fourth plastic lens element 330 andsurrounds the effective optical portion 331, and the object-sideconnecting surface 334 is connected with one of the optical elementsdisposed on an object side of the fourth plastic lens element 330 (thatis, the light blocking sheet 328 of the 3rd embodiment), wherein theobject-side connecting surface 334 is closer to the effective opticalportion 331 than the second annular surface 333 thereto. The image-sideconnecting surface 335 is formed on an image-side surface of the fourthplastic lens element 330 and surrounds the effective optical portion331, and the image-side connecting surface 335 is connected with anotherof the optical elements disposed on an image side of the fourth plasticlens element 330 (that is, the light blocking sheet 329 of the 3rdembodiment). The first annular surface 312 and the second annularsurface 333 are parallel to each other, both of the first annularsurface 312 and the second annular surface 333 are perpendicular to theoptical axis X, and there is without additional one or more opticalelements inserted between the first annular surface 312 and the secondannular surface 333. The object-side connecting surface 334 and theimage-side connecting surface 335 are parallel to each other, and bothof the object-side connecting surface 334 and the image-side connectingsurface 335 are perpendicular to the optical axis X.

At least one of the first annular surface 312 and the second annularsurface 333 is an annular stepped surface arranged along a directionperpendicular to the optical axis X. In particular, as shown in FIG. 3C,the first annular surface 312 is an annular stepped surface arrangedalong the direction perpendicular to the optical axis X in the 3rdembodiment.

Furthermore, please refer to the FIG. 3C and FIG. 3D, a mucilagematerial 336 is applied between the first annular surface 312 and thesecond annular surface 333. In detail, the mucilage material 336 can beapplied on one of the first annular surface 312 and the second annularsurface 333 in advance. When the first annular surface 312 and thesecond annular surface 333 becomes closer to each other during theassembling process, the compression force between two of the surfacescan be absorbed so as to protect an optical effective portion of theplastic lens element from affecting by external forces. After themucilage material 336 is cured, the mucilage material 336 can be used tofix spaces between the adjacent plastic lens elements and served as acompression absorption material.

Please refer to FIG. 3C and FIG. 3D, the parameters shown below and thedefinitions thereof are the same as the 1st embodiment, and anexplanation in this regard will not be provided again.

3rd embodiment ATI (mm) −0.084 CT (mm) 0.567 AT2 (mm) 0.57 S1 (mm) 0.503AT1/AT2 −0.147 S2 (mm) 0.38 d (mm) 0.05 (S1/S2) × 100% 132.3%

When a number of the plastic lens elements is N, a number of the plasticlens elements having an outer diameter ψN1i is N1, and a number ofplastic lens elements having an outer diameter ψN2j is N2, the followingconditions are satisfied: 5≤N<10; N=N1+N2; 2.8 mm<ψN1i<3.8 mm, whereini=1, 2, 3 . . . N−1; and 4.7 mm<012j<7.0 mm, wherein j=1, 2 . . . N−N1.Please refer to FIG. 3E, which is a schematic view of outer diameters ofeach of the plastic lens elements of the imaging lens set 320 accordingto the 3rd embodiment. As shown in FIG. 3E, in the 3rd embodiment, N=5,N1=3 (those are, the first plastic lens element 321, the second plasticlens element 322 and the third plastic lens element 323), N2=2 (thoseare, the fourth plastic lens element 330 and the fifth plastic lenselement 325), and values of the outer diameters of each of the plasticlens elements are shown below.

3rd embodiment Plastic Lens Element 321 322 323 330 325 ψN11 ψN12 ψN13ψN21 ψN22 Outer Diameter 3.1 3.2 3.3 4.76 5.06 (mm)

The detailed optical data of the 3rd embodiment are shown in Table 5 andthe aspheric surface data are shown in Table 6 below.

TABLE 5 3rd embodiment f = 3.62 mm, Fno =1.89, HFOV = 38.5 deg. FocalSurface # Curvature radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Ape. stop Plano −0.334 2 Lens 1 1.414 ASP 0.589Plastic 1.545 56.0 3.31 3 5.584 ASP 0.060 4 Lens 2 6.584 ASP 0.239Plastic 1.669 19.5 −8.91 5 3.082 ASP 0.188 6 Stop Plano 0.145 7 Lens 361.926 ASP 0.510 Plastic 1.544 56.0 44.63 8 −39.832 ASP 0.364 9 Lens 4−17.354 ASP 0.567 Plastic 1.544 56.0 2.18 10 −1.122 ASP 0.244 11 Lens 5−3.377 ASP 0.356 Plastic 1.534 55.9 −1.73 12 1.320 ASP 0.500 13 IR-cutfilter Plano 0.210 Glass 1.517 64.2 — 14 Plano 0.361 15 Image Plano —Surface Reference wavelength is 587.6 nm (d-line). Effective radius ofSurface 6 is 0.840 mm.

TABLE 6 Aspheric Coefficients Surface # 2 3 4 5 7 k= −1.0434E+00−6.9124E+00 7.4219E+00 7.0785E+00 −9.0000E+01 A4= 3.2168E−02 −2.6820E−01−3.4563E−01 −1.5500E−01 −1.5221E−01 A6= 5.2179E−02 4.1018E−01 7.8306E−013.9240E−01 −5.0688E−01 A8= −7.2934E−02 −1.0431E−01 −5.0180E−015.3438E−02 2.8895E+00 A10= −2.3907E−02 −5.4115E−01 −4.1632E−01−9.9651E−01 −9.1924E+00 A12= 1.4817E−01 5.6947E−01 7.8159E−01 1.2820E+001.6351E+01 A14= −1.2662E−01 −1.9199E−01 −3.1169E−01 −4.2827E−01−1.5687E+01 A16= 6.3082E+00 Surface # 8 9 10 11 12 k= −7.9774E+013.0077E+01 −9.7347E−01 2.6127E−01 −8.3924E+00 A4= −1.2898E−01 1.0375E−033.1597E−01 −8.9684E−02 −1.4758E−01 A6= −2.3196E−01 8.7018E−03−3.7353E−01 −1.2952E−01 8.3479E−02 A8= 6.6284E−01 −3.4047E−01 2.8623E−012.0238E−01 −3.4417E−02 A10= −1.4024E+00 5.9214E−01 −1.1987E−01−1.0233E−01 9.4688E−03 A12= 1.7221E+00 −5.3338E−01 2.8612E−02 2.6044E−02−1.6961E−03 A14= −1.1492E+00 2.3979E−01 −3.8053E−03 −3.4084E−031.7810E−04 A16= 3.2541E−01 −4.1504E−02 2.1493E−04 1.8348E−04 −8.0743E−06

In the 3rd embodiment, the equation of the aspheric surface profiles isthe same as the equation of the 1st embodiment, so an explanation inthis regard will not be provided again.

4th Embodiment

FIG. 4A is a schematic view of a camera module according to the 4thembodiment of the present disclosure. FIG. 4B is a schematic view of animaging lens set 420 of an imaging lens assembly 400 of the cameramodule according to the 4th embodiment. As shown in FIG. 4A, the cameramodule includes, in order from an object side to an image side along anoptical axis X, an imaging lens assembly 400, an IR-cut filter 440 andan image surface 450, wherein the image surface 450 is disposed on animage side of the imaging lens assembly 400, and the image sensor 460 isdisposed on the image surface 450. The imaging lens assembly 400includes a plastic barrel 410 and an imaging lens set 420, wherein theimaging lens set 420 is disposed in the plastic barrel 410.

As shown in FIG. 4B, the imaging lens set 420 has the optical axis X andincludes a plurality of optical elements, and the optical elements are,in order from the object side to the image side, a first plastic lenselement 421, a light to blocking sheet 426, a second plastic lenselement 422, a stop 427, a third plastic lens element 423, a lightblocking sheet 428, a spacer 429, a fourth plastic lens element 430, alight blocking sheet 424 and a fifth plastic lens element 425.

The plastic barrel 410 includes an object-side aperture 411 and a firstannular surface 412, wherein the object-side aperture 411 is an aperturestop of the imaging lens set 420, and the first annular surface 412 isformed in the plastic barrel 410 and surrounds the object-side aperture411.

FIG. 4C is an exploded view of the plastic barrel 410 and the fourthplastic lens element 430 according to the 4th embodiment. FIG. 4D is aschematic view of parameters of the 4th embodiment. The fourth plasticlens element 430 includes an effective optical portion 431, a peripheralportion 432, a second annular surface 433, an object-side connectingsurface 434 and an image-side connecting surface 435. The peripheralportion 432 is formed around the effective optical portion 431. Thesecond annular surface 433 is formed on an object-side surface of thefourth plastic lens element 430 and surrounds the effective opticalportion 431, that is, the second annular surface 433 is disposed on theperipheral portion 432. The object-side connecting surface 434 is formedon an object-side surface of the fourth plastic lens element 430 andsurrounds the effective optical portion 431, and the object-sideconnecting surface 434 is connected with one of the optical elementsdisposed on an object side of the fourth plastic lens element 430 (thatis, the spacer 429 of the 4th embodiment), wherein the object-sideconnecting surface 434 is closer to the effective optical portion 431than the second annular surface 433 thereto. The image-side connectingsurface 435 is formed on an image-side surface of the fourth plasticlens element 430 and surrounds the effective optical portion 431, andthe image-side connecting surface 435 is connected with another of theoptical elements disposed on an image side of the fourth plastic lenselement 430 (that is, the light blocking sheet 424 of the 4thembodiment). The first annular surface 412 and the second annularsurface 433 are parallel to each other, both of the first annularsurface 412 and the second annular surface 433 are perpendicular to theoptical axis X, and there is without additional one or more opticalelements inserted between the first annular surface 412 and the secondannular surface 433. The object-side connecting surface 434 and theimage-side connecting surface 435 are parallel to each other, and bothof the object-side connecting surface 434 and the image-side connectingsurface 435 are perpendicular to the optical axis X.

At least one of the first annular surface 412 and the second annularsurface 433 is an annular stepped surface arranged along a directionperpendicular to the optical axis X. In particular, as shown in FIG. 4C,the first annular surface 412 is an annular stepped surface arrangedalong the direction perpendicular to the optical axis X in the 4thembodiment.

Furthermore, please refer to the FIG. 4C and FIG. 4D, a mucilagematerial 436 is applied between the first annular surface 412 and thesecond annular surface 433. In detail, the mucilage material 436 can beapplied on one of the first annular surface 412 and the second annularsurface 433 in advance. When the first annular surface 412 and thesecond annular surface 433 is closing to each other during theassembling process, the compression force between two of the surfacescan be absorbed so as to protect an optical effective portion of theplastic lens element from affecting by external forces. After themucilage material 436 is cured, the mucilage material 436 can be used tofix spaces between the adjacent plastic lens elements and served as acompression absorption material.

Please refer to FIG. 4C and FIG. 4D, the parameters shown below and thedefinitions thereof are the same as the 1st embodiment, and anexplanation in this regard will not be provided again. Furthermore, inthe 4th embodiment, a length of the second annular surface 433perpendicular to the optical axis X is S2, and the length S2 includesS21 and S22 from the effective optical portion 431 toward the peripheralportion 432, wherein S2=S21+S22. Two air spaces are disposed between thefirst annular surface 412 and the second annular surface 433corresponding, and two lengths of the two air spaces disposed betweenthe first annular surface 412 and the second annular surface 433 beingfrom the peripheral portion 432 toward the effective optical portion 431are d1 and d2, respectively.

4th embodiment AT1 (mm) −0.037 CT (mm) 0.563 AT2 (mm) 0.573 S1 (mm)0.701 AT1/AT2 −0.065 S21 (mm) 0.171 S22 (mm) 0.285 d1 (mm) 0.02 (S1/S2)× 100% 153.7% d2 (mm) 0.05

When a number of the plastic lens elements is N, a number of the plasticlens elements having an outer diameter ψN1i is N1, and a number ofplastic lens elements having an outer diameter ψN2j is N2, the followingconditions are satisfied: 5≤N<10; N=N1+N2; 2.8 mm<ψN1i<3.8 mm, whereini=1, 2, 3 . . . N−1; and 4.7 mm<ψN2j<7.0 mm, wherein j=1, 2 . . . N−N1.Please refer to FIG. 3E, which is a schematic view of outer diameters ofeach of the plastic lens elements of the imaging lens set 420 accordingto the 4th embodiment. As shown in FIG. 4E, in the 4th embodiment, N=5,N1=3 (those are, the first plastic lens element 421, the second plasticlens element 422 and the third plastic lens element 423), N2=2 (thoseare, the fourth plastic lens element 430 and the fifth plastic lenselement 425), and values of the outer diameters of each of the plasticlens elements are shown below.

4th embodiment Plastic Lens Element 421 422 423 430 425 ψN11 ψN12 ψN13ψN21 ψN22 Outer Diameter 3.3 3.4 3.5 5.32 5.52 (mm)

The detailed optical data of the 4th embodiment are shown in Table 7 andthe aspheric surface data are shown in Table 8 below.

TABLE 7 4th embodiment f = 3.49 mm, Fno = 2.04, HFOV = 36.1 deg. FocalSurface # Curvature radius Thickness Material Index Abbe # Length 0Object Plano Infinity 1 Ape. stop Plano −0.255 2 Lens 1 1.423 ASP 0.587Plastic 1.545 56.1 3.03 3 8.744 ASP 0.049 4 Lens 2 8.512 ASP 0.220Plastic 1.660 20.4 −7.15 5 3.004 ASP 0.169 6 Stop Plano 0.162 7 Lens 3−73.466 ASP 0.523 Plastic 1.544 56.0 −512.48 8 −100.000 ASP 0.357 9 Lens4 87.853 ASP 0.563 Plastic 1.544 56.0 2.02 10 −1.108 ASP 0.267 11 Lens 5−3.067 ASP 0.340 Plastic 1.534 55.9 −1.67 12 1.302 ASP 0.500 13 IR-cutfilter Plano 0.300 Glass 1.517 64.2 — 14 Plano 0.258 15 Image Plano —Surface Reference wavelength is 587.6 nm (d-line). Effective radius ofSurface 6 is 0.810 mm.

TABLE 8 Aspheric Coefficients Surface # 2 3 4 5 7 k= −1.8377E−012.0125E+01 −3.7459E+00 2.3442E+00 0.0000E+00 A4= −1.5373E−02 −3.0395E−01−3.7053E−01 −1.6078E−01 −2.4321E−01 A6= 1.3620E−01 6.8203E−01 1.1288E+006.6418E−01 3.2677E−02 A8= −4.3499E−01 −7.8626E−01 −1.4182E+00−9.0459E−01 8.4950E−02 A10= 6.2211E−01 1.7994E−01 7.0141E−01 7.3394E−01−4.8979E−01 A12= −3.8754E−01 6.4466E−02 −4.9010E−02 −1.8177E−014.3708E−01 Surface # 8 9 10 11 12 k= 0.0000E+00 0.0000E+00 −8.0532E−01−1.9766E+01 −7.6132E+00 A4= −1.8813E−01 1.9114E−02 3.6682E−01−1.0033E−01 −1.2934E−01 A6= −1.5778E−02 −9.2318E−02 −3.8632E−01−1.3491E−01 6.7047E−02 A8= −6.7829E−02 6.7191E−02 3.3185E−01 1.8696E−01−2.7074E−02 A10= 1.6563E−01 −5.6716E−02 −1.6217E−01 −8.5802E−027.6230E−03 A12= −1.8519E−01 2.8827E−02 4.4494E−02 1.9561E−02 −1.4189E−03A14= 8.8241E−02 −5.3565E−03 −6.4742E−03 −2.2529E−03 1.5179E−04 A16=3.8861E−04 1.0480E−04 −6.8293E−06

In the 4th embodiment, the equation of the aspheric surface profiles isthe same as the equation of the 1st embodiment, so an explanation inthis regard will not be provided again.

5th Embodiment

FIG. 5A is a schematic view of an electronic device 10 according to the5th embodiment of the present disclosure. FIG. 5B is another schematicview of the electronic device 10 according to the 5th embodiment. FIG.5C is a block diagram of the electronic device 10 according to the 5thembodiment. As shown in FIG. 5A, FIG. 5B and FIG. 5C, the electronicdevice 10 of the 5th embodiment is a smartphone and includes a cameramodule 11 and an image sensor 13, and the camera module 11 includes, inorder from an object side to an image side along the optical axis, animaging lens assembly 12 according to the present disclosure and animage surface (reference number is not shown), wherein the image sensor13 is disposed on an image surface of the camera module 11. Therefore,great image quality can be obtained, and the demand for high imagespecification can be satisfied.

Specifically, the user activates the capturing mode by the userinterface 19 of the electronic device 10, wherein the user interface 19of the 5th embodiment can be a touch screen 19 a, a button 19 b, etc. Atthis moment, the imaging lens assembly 12 collects imaging light on theimage sensor 13 and outputs electronic signals associated with images toan image signal processor (ISP) 18.

In response to the camera specification of the electronic device 10, thecamera module 11 can further include an autofocus assembly 14 and anoptical anti-shake mechanism 15, and the electronic device 10 canfurther include at least one auxiliary optical component 17 and at leastone sensing component 16. The auxiliary optical component 17 can beflash modules, infrared distance measurement components, laser focusmodules and modules for compensating for color temperatures. The sensingcomponent 16 can have functions for sensing physical momentum andkinetic energies, such as an accelerator, a gyroscope, and a hall effectelement, so as to sense shaking or jitters applied by hands of the useror external environments, thus the autofocus assembly 14 and the opticalanti-shake mechanism 15 disposed on the camera module 11 can function toobtain great image quality and facilitate the electronic device 10according to the present disclosure to have a capturing function withmultiple modes, such as taking optimized selfies, high dynamic range(HDR) with a low light source, 4K resolution recording, etc.Furthermore, the user can visually see the captured image of the camerathrough the touch screen 19 a and manually operate the view findingrange on the touch screen 19 a to achieve the auto focus function ofwhat you see is what you get.

Furthermore, as shown in FIG. 5B, the camera module 11, the image sensor16 and the auxiliary optical component 17 can be disposed on a flexibleprinted circuit board (FPC) 77 and electrically connected with theassociated elements, such as an image signal processor by a connector 78so as to perform a capturing process. Because the current electronicdevices, such as smart phone, have a tendency of being light and thin,the way of disposing the camera module and related elements on theflexible printed circuit board and then integrating the circuit into themain board of the electronic device via the connector can satisfy themechanical design of the limited space inside the electronic device andthe layout requirements, and obtain more margins. The auto focusfunction of the camera module can be controlled more flexibly via thetouch screen of the electronic device. In the 5th embodiment, theelectronic device 10 includes a plurality of image sensors 16 and aplurality of auxiliary optical components 17, and the image sensors 16and the auxiliary optical components 17 are disposed on the flexibleprinted circuit board 77 and at least one other flexible printed circuitboard (reference number is not shown) and electrically connected withthe associated elements, such as the image signal processor 18, bycorresponding connectors so as to perform a capturing process. In otherembodiments (not shown), the image sensor and the auxiliary opticalcomponent can also be disposed on the main board of the electronicdevice or carrier boards in other forms according to requirements of themechanical design and the circuit layout.

Moreover, the electronic device 10 can further include, but not belimited to, a wireless communication unit, a control unit, a storageunit), a random-access memory (RAM), a read-only memory (ROM), or thecombination thereof.

6th Embodiment

FIG. 6 is a schematic view of an electronic device 20 according to the6th embodiment of the present disclosure. The electronic device 20 ofthe 6th embodiment is a tablet, and the electronic device 20 includes acamera module 21 according the present disclosure.

7th Embodiment

FIG. 7 is a schematic view of an electronic device 30 according to the7th embodiment of the present disclosure. The electronic device 30 ofthe 7th embodiment is a wearable device, and the electronic device 30includes a camera module 31 according to the present disclosure.

The foregoing description, for purpose of explanation, has beendescribed with reference to specific embodiments. It is to be noted thatTables show different data of the different embodiments; however, thedata of the different embodiments are obtained from experiments. Theembodiments were chosen and described in order to best explain theprinciples of the disclosure and its practical applications, to therebyenable others skilled in the art to best utilize the disclosure andvarious embodiments with various modifications as are suited to theparticular use contemplated. The embodiments depicted above and theappended drawings are exemplary and are not intended to be exhaustive orto limit the scope of the present disclosure to the precise formsdisclosed. Many modifications and variations are possible in view of theabove teachings.

What is claimed is:
 1. An imaging lens assembly, comprising: a plasticbarrel, comprising: an object-side aperture; and a first annular surfaceformed in the plastic barrel and surrounding the object-side aperture;and an imaging lens set disposed in the plastic barrel and having anoptical axis, and the imaging lens set comprising a plurality of opticalelements, wherein at least one of the optical elements is a plastic lenselement, and the plastic lens element comprises: an effective opticalportion; a peripheral portion formed around the effective opticalportion; a second annular surface formed on an object-side surface ofthe plastic lens element and surrounding the effective optical portion;and an object-side connecting surface formed on the object-side surfaceof the plastic lens element and surrounding the effective opticalportion, and the object-side connecting surface connected with one ofthe optical elements disposed on an object side of the plastic lenselement, wherein the object-side connecting surface is closer to theeffective optical portion than the second annular surface thereto;wherein, the first annular surface and the second annular surface areparallel to each other, both of the first annular surface and the secondannular surface are perpendicular to the optical axis, and there iswithout additional one or more optical elements inserted between thefirst annular surface and the second annular surface; wherein, theobject-side connecting surface is disposed on an object side of thefirst annular surface, a distance parallel to the optical axis betweenthe object-side connecting surface and the first annular surface is AT1,and the following condition is satisfied:−0.40 mm<AT1<0 mm.
 2. The imaging lens assembly of claim 1, wherein anair space is disposed between the first annular surface and the secondannular surface.
 3. The imaging lens assembly of claim 2, wherein alength of the air space between the first annular surface and the secondannular surface is d, and the following condition is satisfied:0.001 mm<d<0.08 mm.
 4. The imaging lens assembly of claim 2, wherein theplastic lens element further comprises: an image-side connecting surfaceformed on an image-side surface of the plastic lens element andsurrounding the effective optical portion, the image-side connectingsurface connected with another of the optical elements disposed on animage side of the plastic lens element, wherein the distance parallel tothe optical axis between the object-side connecting surface and thefirst annular surface is AT1, a distance parallel to the optical axisbetween the image-side connecting surface and the first annular surfaceis AT2, and the following condition is satisfied:−0.60<AT1/AT2<0.0.
 5. The imaging lens assembly of claim 4, wherein thedistance parallel to the optical axis between the object-side connectingsurface and the first annular surface is AT1, the distance parallel tothe optical axis between the image-side connecting surface and the firstannular surface is AT2, and the following condition is satisfied:2×|AT1|<AT2.
 6. The imaging lens assembly of claim 4, wherein theobject-side connecting surface and the image-side connecting surface areparallel to each other, and both of the object-side connecting surfaceand the image-side connecting surface are perpendicular to the opticalaxis.
 7. The imaging lens assembly of claim 2, wherein a mucilagematerial is applied between the first annular surface and the secondannular surface.
 8. The imaging lens assembly of claim 2, wherein atleast one of the first annular surface and the second annular surface isan annular stepped surface arranged along a direction perpendicular tothe optical axis.
 9. The imaging lens assembly of claim 8, wherein amucilage material is applied between the first annular surface and thesecond annular surface.
 10. The imaging lens assembly of claim 4,wherein a central thickness of the plastic lens element is CT, thedistance parallel to the optical axis between the image-side connectingsurface and the first annular surface is AT2, and the followingcondition is satisfied:0.4<AT2/CT<2.0.
 11. The imaging lens assembly of claim 10, wherein thecentral thickness of the plastic lens element is CT, the distanceparallel to the optical axis between the image-side connecting surfaceand the first annular surface is AT2, and the following condition issatisfied:0.5<AT2/CT<1.6.
 12. The imaging lens assembly of claim 3, wherein alength of the first annular surface perpendicular to the optical axis isS1, a length of the second annular surface perpendicular to the opticalaxis is S2, and the following condition is satisfied:70%<(S1/S2)×100%<200%.
 13. A camera module, comprising: the imaging lensassembly of claim
 1. 14. The camera module of claim 13, wherein theobject-side aperture is an aperture stop of the imaging lens assembly.15. The camera module of claim 13, wherein a number of the plastic lenselement of the imaging lens assembly is N, a number of the plastic lenselements having an outer diameter ψN1i is N1, a number of the plasticlens elements having an outer diameter ψN2j is N2, and the followingconditions are satisfied:5≤N<10;N=N1+N2;2.8 mm<ψN1i<3.8 mm, wherein i=1,2,3 . . . N−1; and4.7 mm<ψN2j<7.0 mm, wherein j=1,2 . . . N−N1.
 16. An electronic device,comprising: the camera module of claim 13; and an image sensor disposedon an image surface of the camera module.